Dr. Silkworth wrote a letter to Alcoholics Anonymous describing the nature of addiction as he saw it. He also stated that there is little science can accomplish regarding the full recovery of chronic alcoholics. In a doctor's humble view, we are hopeless.
Dr. Silkworth realized that man-made remedies often fail to change a man or woman fundamentally. He admits that some form of "moral psychology" is required but that such a thing cannot be applied via medicine or other type of physical remedy. Furthermore, he admits that the solution is effective only when carried by another alcoholic. Finally, he concedes that the spiritual and altruistic program contained within the Big Book has changed hopeless men, and changed them for good.
By the way, the word psychology quite literally refers to the study of the soul. Dr. Silkworth was asserting that addicts and alcoholics need to somehow undergo a profound 'soul change', one which rearranges the addict's entire moral foundation. Clearly, taking a pill or sitting in a group or writing down some triggers cannot elicit such a change, as the type of shift to which he refers is indeed miraculous. Such a change can only be powered by one source, which lies outside the boundaries of the physical world. Such a change can only be powered by GOD.
God, teach me how to be more honest, that I may better love others and serve You well...